rest_authentication: add a requests wrapper (#67085)
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# hobo - portal to configure and deploy applications
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# Copyright (C) 2015-2022 Entr'ouvert
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Affero General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import urllib
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import requests
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from django.conf import settings
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from django.utils.http import urlencode
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from requests import Response
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from requests import Session as RequestsSession
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from requests.auth import AuthBase
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from hobo.signature import sign_url
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class PublikSignature(AuthBase):
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def __init__(self, secret):
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self.secret = secret
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def __call__(self, request):
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request.url = sign_url(request.url, self.secret)
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return request
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def get_known_service_for_url(url):
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netloc = urllib.parse.urlparse(url).netloc
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for services in settings.KNOWN_SERVICES.values():
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for service in services.values():
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remote_url = service.get('url')
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if urllib.parse.urlparse(remote_url).netloc == netloc:
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return service
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return None
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class Requests(RequestsSession):
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def request(self, method, url, **kwargs):
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remote_service = get_known_service_for_url(url)
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kwargs['auth'] = PublikSignature(remote_service.get('secret'))
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# only keeps the path (URI) in url parameter, scheme and netloc are
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# in remote_service
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scheme, netloc, path, params, query, fragment = urllib.parse.urlparse(url)
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url = urllib.parse.urlunparse(('', '', path, params, query, fragment))
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query_params = {'orig': remote_service.get('orig')}
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remote_service_base_url = remote_service.get('url')
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scheme, netloc, dummy, params, old_query, fragment = urllib.parse.urlparse(remote_service_base_url)
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query = urlencode(query_params)
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url = urllib.parse.urlunparse((scheme, netloc, path, params, query, fragment))
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return super().request(method, url, **kwargs)
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